diff --git a/7.3.773 b/7.3.773
new file mode 100644
index 0000000..225eef2
--- /dev/null
+++ b/7.3.773
@@ -0,0 +1,45 @@
+To: vim_dev@googlegroups.com
+Subject: Patch 7.3.773
+Fcc: outbox
+From: Bram Moolenaar <Bram@moolenaar.net>
+Mime-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+------------
+
+Patch 7.3.773 (after 7.3.767)
+Problem:    Crash when OriginalFirstThunk is zero.
+Solution:   Skip items with OriginalFirstThunk not set. (Ken Takata)
+Files:	    src/mbyte.c
+
+
+*** ../vim-7.3.772/src/mbyte.c	2013-01-17 14:39:43.000000000 +0100
+--- src/mbyte.c	2013-01-19 13:59:21.000000000 +0100
+***************
+*** 4317,4322 ****
+--- 4317,4324 ----
+  							    .VirtualAddress);
+      for (; pImpDesc->FirstThunk; ++pImpDesc)
+      {
++ 	if (!pImpDesc->OriginalFirstThunk)
++ 	    continue;
+  	pIAT = (PIMAGE_THUNK_DATA)(pImage + pImpDesc->FirstThunk);
+  	pINT = (PIMAGE_THUNK_DATA)(pImage + pImpDesc->OriginalFirstThunk);
+  	for (; pIAT->u1.Function; ++pIAT, ++pINT)
+*** ../vim-7.3.772/src/version.c	2013-01-17 18:33:58.000000000 +0100
+--- src/version.c	2013-01-19 14:01:50.000000000 +0100
+***************
+*** 727,728 ****
+--- 727,730 ----
+  {   /* Add new patch number below this line */
++ /**/
++     773,
+  /**/
+
+-- 
+Experience is what you get when you don't get what you want.
+
+ /// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net   \\\
+///        sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
+\\\  an exciting new programming language -- http://www.Zimbu.org        ///
+ \\\            help me help AIDS victims -- http://ICCF-Holland.org    ///